Gu Yun was no longer stationed at the border areas in his middle-age, so except for routine inspection of military affairs in the four borders, he spent most of his time in the capital. After all, life in the capital was easy, there was also someone to take good care of him in his own house. After a long time, it had also given birth to a few mundane problems, such as how once in a while, when he got to a strange new place, he would be unable to sleep for a night or two.

However, as long as a pack of tranquilizer was placed at the head of the bed, he would sleep deeply regardless of what place it was.

https://www.northwestflower.net/sha-po-lang/extras/first-encounter

"Fuu—" Shen Yi ran over breathlessly, "Zi Xi! Zi Xi!"

Gu Yun held the Qian Li Yan, making an "Mm" sound in response without turning his head. His eyes still did not leave the Barbarian scouts who had just quietly left: "More than ten carts of Ziliujin, the wheel imprint on the ground is one palm deep. Good! Very good for a field officer of eight counties of the North. Such great appetite and courage!"

In the 27th year of Yuan He, Gu Yun received a classified order to come to the Northern Frontier to look for the whereabouts of the Fourth Prince who was lost among the common folk.

The Fourth Prince's birth mother was a Barbarian, Gu Yun's ears and eyes that had been damaged since he was a child were a gift bestowed on him by the Barbarians' poison. No one dared to touch his invert scale, but His Majesty that grand old man dared to do so.

The meaning of Emperor Yuan He was very clear - the little prince had been lost among the commoners for many years, meeting sudden changes, he must be confused and uneasy, thus he would ask Gu Yun to escort him along the way to form a good bond, to leave the resentment of the previous generation behind.

The old Emperor pressed his head forcing him to ‘form a good bond’, it was not convenient for Gu Yun to resist the decree either, thus he started carrying out a lazy and half-hearted job, and ordered people to ‘inquire and search’ just for the sake of it. If it weren't for him taking notice of the strange movements of the Barbarians, he would still be in charge of the Western Regions by now. Just a little prince who couldn't distinguish round from flat absolutely could not force him to transfer to this place.

"Ji Ping, you are here just in time," Gu Yun, who was not even twenty at that time, chuckled a little bit and threw the Qian Li Yan to Shen Yi. "You go back tomorrow and transfer a team of Black Eagle from the Black Iron Camp here."

*Yifu is 19 years old here.